Nano USB 2.0 Bluetooth Dongle
From LinuxMCE
Nano USB 2.0 Bluetooth Dongle
There are a few nano bluetooth adapters now available.
They are USB based and not much bigger than the USB plug itself.
The Nano Bluetooth adapters are less than 5 Euros/Pounds each.
They are ideal for Linux MCE because they only have a range of 10m and work out of the box. Simply plug and play!